Wrench.



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APPLICATION rmm F219, 1912.

Patented Apr-.30, 1912.

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INVENTOR ATTORNEYS FERENCZ KovAcs, or HANNIBAL; MISSOURI.

WRENCH.

Specification of Letters Patent.

Application filed February 9, 1912.

Patented Apr. 30, 1912.

Serial No. 675,588.

To alZ whom it may concern:

Be it known that I, FERENCZ Koviios, a subject of the King of Hungary,residing at Hannibal, in the county of Marion and State of Missouri,have invented certain new and useful Improvements in renches, of whichthe following is a specification, reference being bad therein to theaccompanying drawing.

This invention relates to wrenches, and my invention aims to provide aquick acting wrench having an adjustable jaw that can be positivelylocked in adjusted position whereby the aw cannot slip while the wrenchis in use.

My invention further aims to provide a simple and inexpensive wrenchconsisting of comparatively few parts that are easily and quicklyassembled.

The invention still further aims to accomplish the above results by amechanical construction that will be hereinafter specifically describedand then claimed, and reference will now be had to the drawing, whereinFigure 1 is a side elevation of the wrench, Fig. 2 is a similar viewpartly broken away and partly in section, and Fig. 3 is a horizontalsectional view of the wrench.

A wrench in accordance with this invention comprises a shank 1rectangular in cross section and having the outer end thereof providedwith a fixed jaw 2, while the inner end of the shank has a detachablehandle 3. The rear side of the shank 1 adjacent to the handle 3 has anenlargement 4 and the front side of the shank is provided with a bracketarm 5.

Slidably mounted upon the shank 1 is an adjustable jaw 6 having a stem 7engaging the front side of the shank and extending between said shankand the bracket arm The jaw 6 is retained in engagement with the shank 1by a yoke 8 riveted or otherwise secured, as at 9 to the sides of thejaw.

The stem 7 of the aw has the front side thereof provided with alongitudinal groove 9' and the inner wall of said groove has ratchetteeth 10. The stem 7 is retained between the shank 1 and the bracket arm5 by side straps 11 riveted or otherwise connected, as at 12 to theshank 1 and the bracket arm 5.

The inner side of the bracket arm 5 has a recess 13 and pivotallymounted in said recess by a pin 14: is the apertured lug 15 of a lockingpawl 16. The inner end of the pawl is engaged by a flat spring 17secured to the inner side of the arm 5, as at 18 and this spring retainsthe locking pawl normally out of engagement with the teeth 10 of thestem 7. The locking pawl 16 is within the groove 9 of the stem 7 andengaging the end of said pawl is a screw 19 having a knurled head 20,whereby said screw can be easily adjusted to shift the pawl 16 intoengagement with the teeth 10 of the stem 7. The screw 19 is carried bythe end of the arm 5 and by adjusting said screw the stem 7 can belocked relatively to the shank 1 to hold the jaw 6 in adjusted position.

What I claim is 1. A wrench comprising a shank, a fixed jaw carried bythe outer end thereof, a handle carried by the inner end of said shank,a bracket arm carried by the front side of said shank, a aw slidablymounted upon the front side of said shank, a yoke carried by said jawand embracing said shank, a stem carried by said jaw and extendingbetween said shank and said bracket arm, said stem having a longitudinalgroove in the front side thereof with the inner wall of said groovetoothed, a locking pawl piv otally connected to said bracket arm andextending into the groove of said stem, a fiat spring connected to saidbracket arm and engaging one end of said locking pawl for retaining saidpawl normally out of engagement with said stem, and a screw arranged inthe end of said bracket arm and adapted to be adjusted to shift saidpawl into engagement with said stem and lock said stem relatively tosaid shank.

2. A wrench comprising a shank, a fixed jaw carried by the outer endthereof, a handle carried by the inner end of said shank, a bracket armcarried by the front side of said shank, a jaw slidably mounted upon thefront side of said shank, a yoke carried by said jaw and embracing saidshank, a stem carried by said jaw and extending between said shank andsaid bracket arm, said stem having a longitudinal groove in the frontside thereof with the inner wall of said groove toothed, a locking pawlpivotally connected to said bracket arm and extending into the groove ofsaid stem, a flat spring connected to said bracket arm and engaging oneend of said locking pawl for retaining said pawl normally out ofengagement with said stem, a screw arranged in the end of said bracketarm and adapted to be adjusted to shift said pawl into engagement Withsaid stem and lock said stein relatively to said shank, and strapssecured to the sides of said shank and said bracket arm for guiding saidstem between said shank and said bracketarm.

In testimony whereof I a HiX my signature 1n the presence of two\vltnesses.

FERENCZ KOVACS.

Htnesses LOUIS KovAcl-i, PAUL SAMON.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

